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<title>MIT-BIH Arrhythmia Database Directory (Records)</title>
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<a href="mitdbdir.htm"><h1 align=center>MIT-BIH Arrhythmia Database Directory
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<p>
<b>Next:</b> <a href="tables.htm">Tables</a>
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<b>Previous:</b> <a href="intro.htm">Introduction</a>

<h1>Records in the MIT-BIH Arrhythmia Database</h1>
<p>
This section contains notes and statistics that describe the contents of
each record.
The leads used for the upper and lower signals are given for each record
immediately following the record number.
Beat counts are given for the first five minutes of each record and
the remainder of the record (the EC38-defined ``learning'' and ``test''
periods, respectively).
Note that the totals include two types of non-beats (blocked APCs and
ventricular flutter waves) for those few records in which they occur.
The total duration of each record is 30 minutes and 5.556 seconds;  durations
noted below are rounded to the nearest second, and may not sum to exactly
30:06 because of accumulated rounding error.
Heart rates are given in beats per minute measured over 3 R-R intervals.

<p>
Following the statistical summary and notes for each record are links to points
of interest in each case.  You may follow these links to view the signals and
annotations using <strong>WAVE</strong>.  To do so successfully, you must have
configured your browser to use <tt>wavescript</tt> as a helper application, as
described in <i><a href="/physiotools/wug/wave-web.htm">WAVE and the
Web</a></i> (in the <i><a href="/physiotools/wug/">WAVE User's Guide</a></i>).

<p>
Follow the links in this table to go directly to any record:

<table>
<tr>
<td><a href="#100">100</a>
<td><a href="#104">104</a>
<td><a href="#108">108</a>
<td><a href="#113">113</a>
<td><a href="#117">117</a>
<td><a href="#122">122</a>
<td><a href="#201">201</a>
<td><a href="#207">207</a>
<td><a href="#212">212</a>
<td><a href="#217">217</a>
<td><a href="#222">222</a>
<td><a href="#231">231</a></tr>
<tr>
<td><a href="#101">101</a>
<td><a href="#105">105</a>
<td><a href="#109">109</a>
<td><a href="#114">114</a>
<td><a href="#118">118</a>
<td><a href="#123">123</a>
<td><a href="#202">202</a>
<td><a href="#208">208</a>
<td><a href="#213">213</a>
<td><a href="#219">219</a>
<td><a href="#223">223</a>
<td><a href="#232">232</a></tr>
<tr>
<td><a href="#102">102</a>
<td><a href="#106">106</a>
<td><a href="#111">111</a>
<td><a href="#115">115</a>
<td><a href="#119">119</a>
<td><a href="#124">124</a>
<td><a href="#203">203</a>
<td><a href="#209">209</a>
<td><a href="#214">214</a>
<td><a href="#220">220</a>
<td><a href="#228">228</a>
<td><a href="#233">233</a></tr>
<tr>
<td><a href="#103">103</a>
<td><a href="#107">107</a>
<td><a href="#112">112</a>
<td><a href="#116">116</a>
<td><a href="#121">121</a>
<td><a href="#200">200</a>
<td><a href="#205">205</a>
<td><a href="#210">210</a>
<td><a href="#215">215</a>
<td><a href="#221">221</a>
<td><a href="#230">230</a>
<td><a href="#234">234</a></tr>
</table>

<hr>
<h2><a name="100">Record 100</a>  (MLII, V5; male, age 69)</h2>
<p>
<i>Medications:</i> Aldomet, Inderal<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>367</td><td>1872</td><td>2239</td></tr>
<tr align=right><td>APC</td><td>4</td><td>29</td><td>33</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>371</td><td>1902</td><td>2273</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 33 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>70-89</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1001103.xws">11:03</a> Normal sinus rhythm<br>
<a href="samples/1002513.xws">25:13</a> PVC<br>
<a href="samples/1002609.xws">26:09</a> APCs<br>
<a href="samples/1002755.xws">27:55</a> Normal sinus rhythm<br>


<hr>
<h2><a name="101">Record 101</a>  (MLII, V1; female, age 75)</h2>
<p>
<i>Medications:</i> Diapres<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>342</td><td>1518</td><td>1860</td></tr>
<tr align=right><td>APC</td><td>-</td><td>3</td><td>3</td></tr>
<tr align=right><td>Unclassifiable</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>342</td><td>1523</td><td>1865</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>55-79</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>3</td><td align=right>   30:01</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:04</td></tr>
<tr><td>Unreadable</td><td align=right>1</td><td align=right>    0:01</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1010134.xws">1:34</a> Normal sinus rhythm<br>
<a href="samples/1010148.xws">1:48</a> Noise<br>
<a href="samples/1010513.xws">5:13</a> Noise/artifact<br>
<a href="samples/1010954.xws">9:54</a> APC<br>
<a href="samples/1012432.xws">24:32</a> APC<br>

<hr>
<h2><a name="102">Record 102</a>  (V5, V2; female, age 84)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>98</td><td>1</td><td>99</td></tr>
<tr align=right><td>PVC</td><td>1</td><td>3</td><td>4</td></tr>
<tr align=right><td>Paced</td><td>243</td><td>1785</td><td>2028</td></tr>
<tr align=right><td>Pacemaker fusion</td><td>24</td><td>32</td><td>56</td></tr>
<tr align=right><td>Total</td><td>366</td><td>1821</td><td>2187</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 4 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>72-78</td><td align=right>2</td><td align=right>    1:22</td></tr>
<tr><td>Paced rhythm</td><td align=center>68-78</td><td align=right>3</td><td align=right>   28:44</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The rhythm is paced with a demand pacemaker.  The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1020055.xws">0:55</a> Paced rhythm<br>
<a href="samples/1020112.xws">1:12</a> Transition from paced to normal sinus rhythm<br>
<a href="samples/1020128.xws">1:28</a> PVC<br>
<a href="samples/1020230.xws">2:30</a> Normal sinus rhythm<br>
<a href="samples/1020451.xws">4:51</a> Pacemaker fusion beats<br>
<a href="samples/1020935.xws">9:35</a> PVC<br>
<a href="samples/1021612.xws">16:12</a> Paced rhythm<br>

<hr>
<h2><a name="103">Record 103</a>  (MLII, V2; male, age not recorded)</h2>
<p>
<i>Medications:</i> Diapres, Xyloprim<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>355</td><td>1727</td><td>2082</td></tr>
<tr align=right><td>APC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>355</td><td>1729</td><td>2084</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 2 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>62-92</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>4</td><td align=right>   22:01</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:09</td></tr>
<tr><td>Lower noisy</td><td align=right>2</td><td align=right>    7:56</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1030109.xws">1:09</a> Normal sinus rhythm<br>
<a href="samples/1031721.xws">17:21</a> Normal sinus rhythm<br>
<a href="samples/1031915.xws">19:15</a> APC, noise in lower signal<br>
<a href="samples/1032213.xws">22:13</a> Noise in lower signal<br>
<a href="samples/1032333.xws">23:33</a> Noise in lower signal<br>
<a href="samples/1032858.xws">28:58</a> Noise in lower signal<br>

<hr>
<h2><a name="104">Record 104</a>  (V5, V2; female, age 66)</h2>
<p>
<i>Medications:</i> Digoxin, Pronestyl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>65</td><td>98</td><td>163</td></tr>
<tr align=right><td>PVC</td><td>1</td><td>1</td><td>2</td></tr>
<tr align=right><td>Paced</td><td>197</td><td>1183</td><td>1380</td></tr>
<tr align=right><td>Pacemaker fusion</td><td>104</td><td>562</td><td>666</td></tr>
<tr align=right><td>Unclassifiable</td><td>5</td><td>13</td><td>18</td></tr>
<tr align=right><td>Total</td><td>372</td><td>1857</td><td>2229</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 2 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>69-82</td><td align=right>22</td><td align=right>    3:52</td></tr>
<tr><td>Paced rhythm</td><td align=center>70-78</td><td align=right>23</td><td align=right>   26:13</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>13</td><td align=right>   26:46</td></tr>
<tr><td>Upper noisy</td><td align=right>5</td><td align=right>    0:24</td></tr>
<tr><td>Lower noisy</td><td align=right>8</td><td align=right>    0:46</td></tr>
<tr><td>Both noisy</td><td align=right>12</td><td align=right>    2:09</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The rate of paced rhythm is close to that of the underlying sinus rhythm,
resulting in many pacemaker fusion beats.  The PVCs are multiform.  Several
bursts of muscle noise occur, but the signals are generally of good quality.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1040342.xws">3:42</a> PVC<br>
<a href="samples/1040513.xws">5:13</a> Noise<br>
<a href="samples/1040552.xws">5:52</a> Transition from paced to normal sinus rhythm<br>
<a href="samples/1040617.xws">6:17</a> Noise<br>
<a href="samples/1040822.xws">8:22</a> Noise in lower signal<br>
<a href="samples/1042651.xws">26:51</a> Paced, normal, and pacemaker fusion beats<br>
<a href="samples/1042910.xws">29:10</a> Paced, normal, and pacemaker fusion beats<br>

<hr>
<h2><a name="105">Record 105</a>  (MLII, V1; female, age 73)</h2>
<p>
<i>Medications:</i> Digoxin, Nitropaste, Pronestyl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>405</td><td>2121</td><td>2526</td></tr>
<tr align=right><td>PVC</td><td>12</td><td>29</td><td>41</td></tr>
<tr align=right><td>Unclassifiable</td><td>-</td><td>5</td><td>5</td></tr>
<tr align=right><td>Total</td><td>417</td><td>2155</td><td>2572</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 41 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>78-102</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>31</td><td align=right>   22:18</td></tr>
<tr><td>Upper noisy</td><td align=right>3</td><td align=right>    0:10</td></tr>
<tr><td>Lower noisy</td><td align=right>28</td><td align=right>    3:27</td></tr>
<tr><td>Both noisy</td><td align=right>23</td><td align=right>    4:06</td></tr>
<tr><td>Unreadable</td><td align=right>4</td><td align=right>    0:04</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform.  The predominant feature of this tape is
high-grade noise and artifact.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1050527.xws">5:27</a> Artifact<br>
<a href="samples/1050757.xws">7:57</a> PVC<br>
<a href="samples/1051516.xws">15:16</a> Normal sinus rhythm<br>
<a href="samples/1051752.xws">17:52</a> Artifacts<br>
<a href="samples/1052202.xws">22:02</a> Noise<br>
<a href="samples/1052645.xws">26:45</a> PVC<br>
<a href="samples/1052727.xws">27:27</a> Noise<br>
<a href="samples/1052808.xws">28:08</a> Noise<br>
<a href="samples/1052907.xws">29:07</a> Noise<br>

<hr>
<h2><a name="106">Record 106</a>  (MLII, V1; female, age 24)</h2>
<p>
<i>Medications:</i> Inderal<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>271</td><td>1236</td><td>1507</td></tr>
<tr align=right><td>PVC</td><td>60</td><td>460</td><td>520</td></tr>
<tr align=right><td>Total</td><td>331</td><td>1696</td><td>2027</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 327 isolated beats
<li> 95 couplets
<li> 1 run of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>49-87</td><td align=right>21</td><td align=right>   22:36</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>55-103</td><td align=right>18</td><td align=right>    7:15</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>57-90</td><td align=right>1</td><td align=right>    0:13</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>121</td><td align=right>1</td><td align=right>    0:02</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>15</td><td align=right>   16:25</td></tr>
<tr><td>Lower noisy</td><td align=right>15</td><td align=right>   13:41</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1060019.xws">0:19</a> Normal sinus rhythm, noise in lower signal<br>
<a href="samples/1060137.xws">1:37</a> Ventricular couplets<br>
<a href="samples/1060253.xws">2:53</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/1060423.xws">4:23</a> PVC<br>
<a href="samples/1060757.xws">7:57</a> Noise in lower signal<br>
<a href="samples/1061052.xws">10:52</a> Noise in lower signal<br>
<a href="samples/1061227.xws">12:27</a> Ventricular bigeminy (two types)<br>
<a href="samples/1061617.xws">16:17</a> Multiform PVCs, ventricular couplet<br>
<a href="samples/1062513.xws">25:13</a> Ventricular couplet<br>
<a href="samples/1062552.xws">25:52</a> Ventricular couplets<br>

<hr>
<h2><a name="107">Record 107</a>  (MLII, V1; male, age 63)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>PVC</td><td>2</td><td>57</td><td>59</td></tr>
<tr align=right><td>Paced</td><td>351</td><td>1727</td><td>2078</td></tr>
<tr align=right><td>Total</td><td>353</td><td>1784</td><td>2137</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 59 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Paced rhythm</td><td align=center>68-82</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   30:04</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:02</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>Complete heart block is present. The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1070044.xws">0:44</a> Paced rhythm<br>
<a href="samples/1071230.xws">12:30</a> PVC<br>
<a href="samples/1071954.xws">19:54</a> PVC<br>
<a href="samples/1072038.xws">20:38</a> Noise<br>
<a href="samples/1072552.xws">25:52</a> PVC<br>

<hr>
<h2><a name="108">Record 108</a>  (MLII, V1; female, age 87)</h2>
<p>
<i>Medications:</i> Digoxin, Quinaglute<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>279</td><td>1460</td><td>1740</td></tr>
<tr align=right><td>APC</td><td>-</td><td>4</td><td>4</td></tr>
<tr align=right><td>PVC</td><td>4</td><td>13</td><td>17</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Junctional escape</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Blocked APC</td><td>2</td><td>9</td><td>11</td></tr>
<tr align=right><td>Total</td><td>285</td><td>1489</td><td>1774</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 4 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 15 isolated beats
<li> 2 couplets
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>44-78</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>19</td><td align=right>   24:05</td></tr>
<tr><td>Upper noisy</td><td align=right>3</td><td align=right>    0:16</td></tr>
<tr><td>Lower noisy</td><td align=right>12</td><td align=right>    2:45</td></tr>
<tr><td>Both noisy</td><td align=right>8</td><td align=right>    3:01</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is borderline first degree AV block and sinus arrhythmia.  The
PVCs are multiform.  The lower channel exhibits considerable noise and
baseline shifts.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1080022.xws">0:22</a> PVC, blocked APC, noise<br>
<a href="samples/1080451.xws">4:51</a> Interpolated PVC<br>
<a href="samples/1080741.xws">7:41</a> Axis shift<br>
<a href="samples/1080813.xws">8:13</a> PVC, blocked APC, fusion PVC<br>
<a href="samples/1081055.xws">10:55</a> Sinus arrhythmia<br>
<a href="samples/1081808.xws">18:08</a> Fusion PVC-PVC couplet<br>
<a href="samples/1082005.xws">20:05</a> Junctional escape beat<br>
<a href="samples/1082420.xws">24:20</a> Blocked APC, APCs<br>
<a href="samples/1082810.xws">28:10</a> Noise<br>
<a href="samples/1082900.xws">29:00</a> Noise<br>

<hr>
<h2><a name="109">Record 109</a>  (MLII, V1; male, age 64)</h2>
<p>
<i>Medications:</i> Quinidine<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Left BBB</td><td>425</td><td>2067</td><td>2492</td></tr>
<tr align=right><td>PVC</td><td>6</td><td>32</td><td>38</td></tr>
<tr align=right><td>Fusion PVC</td><td>2</td><td>-</td><td>2</td></tr>
<tr align=right><td>Total</td><td>433</td><td>2099</td><td>2532</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 40 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>77-101</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:52</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:14</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is first degree AV block.  The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1090013.xws">0:13</a> Fusion PVC<br>
<a href="samples/1090128.xws">1:28</a> PVC<br>
<a href="samples/1090336.xws">3:36</a> Normal sinus rhythm with left bundle branch block<br>
<a href="samples/1090446.xws">4:46</a> PVC<br>
<a href="samples/1090527.xws">5:27</a> Noise<br>
<a href="samples/1091401.xws">14:01</a> PVC<br>
<a href="samples/1091713.xws">17:13</a> PVC<br>
<a href="samples/1091921.xws">19:21</a> PVC<br>
<a href="samples/1092609.xws">26:09</a> Noise<br>
<a href="samples/1092803.xws">28:03</a> PVC<br>
<a href="samples/1092828.xws">28:28</a> Normal sinus rhythm with left bundle branch block<br>
<a href="samples/1092910.xws">29:10</a> PVC<br>

<hr>
<h2><a name="111">Record 111</a>  (MLII, V1; female, age 47)</h2>
<p>
<i>Medications:</i> Digoxin, Lasix<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Left BBB</td><td>348</td><td>1775</td><td>2123</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>348</td><td>1776</td><td>2124</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>64-82</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>5</td><td align=right>   29:47</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:07</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:11</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is first degree AV block.  There are short bursts of both baseline
shifts and muscle noise, but in general, the quality is excellent.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1110025.xws">0:25</a> Normal sinus rhythm, first degree AVB<br>
<a href="samples/1110241.xws">2:41</a> Baseline shift noise<br>
<a href="samples/1110352.xws">3:52</a> Noise<br>
<a href="samples/1110404.xws">4:04</a> Axis shift (in upper signal)<br>
<a href="samples/1110831.xws">8:31</a> PVC<br>
<a href="samples/1111153.xws">11:53</a> Axis shift<br>
<a href="samples/1111541.xws">15:41</a> Noise<br>
<a href="samples/1111954.xws">19:54</a> Noise<br>
<a href="samples/1112702.xws">27:02</a> Noise<br>

<hr>
<h2><a name="112">Record 112</a>  (MLII, V1; male, age 54)</h2>
<p>
<i>Medications:</i> Digoxin, Pronestyl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>428</td><td>2109</td><td>2537</td></tr>
<tr align=right><td>APC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>428</td><td>2111</td><td>2539</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 2 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>74-91</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>6</td><td align=right>   29:11</td></tr>
<tr><td>Upper noisy</td><td align=right>2</td><td align=right>    0:21</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:33</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is S-T segment depression in the upper channel.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1121140.xws">11:40</a> APC<br>
<a href="samples/1121230.xws">12:30</a> Axis shift<br>
<a href="samples/1121249.xws">12:49</a> APC, noise<br>

<hr>
<h2><a name="113">Record 113</a>  (MLII, V1; female, age 24)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>288</td><td>1501</td><td>1789</td></tr>
<tr align=right><td>Aberrated APC</td><td>1</td><td>5</td><td>6</td></tr>
<tr align=right><td>Total</td><td>289</td><td>1506</td><td>1795</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 6 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>48-87</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The variation in the rate of normal sinus rhythm is possibly due to a
wandering atrial pacemaker.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1130420.xws">4:20</a> Moderate baseline wander<br>
<a href="samples/1130822.xws">8:22</a> Aberrated APC<br>
<a href="samples/1131148.xws">11:48</a> Sinus arrhythmia with variation in P-wave morphology<br>
<a href="samples/1131227.xws">12:27</a> Sinus arrhythmia<br>
<a href="samples/1132210.xws">22:10</a> Aberrated APC<br>
<a href="samples/1132901.xws">29:01</a> Sinus arrhythmia<br>

<hr>
<h2><a name="114">Record 114</a>  (V5, MLII; female, age 72)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>261</td><td>1559</td><td>1820</td></tr>
<tr align=right><td>APC</td><td>-</td><td>10</td><td>10</td></tr>
<tr align=right><td>Junctional premature</td><td>1</td><td>1</td><td>2</td></tr>
<tr align=right><td>PVC</td><td>13</td><td>30</td><td>43</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>4</td><td>4</td></tr>
<tr align=right><td>Total</td><td>275</td><td>1604</td><td>1879</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 7 isolated beats
<li> 1 run of 5 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 45 isolated beats
<li> 1 couplet
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>51-82</td><td align=right>2</td><td align=right>   30:01</td></tr>
<tr><td>SVTA</td><td align=center>102-122</td><td align=right>1</td><td align=right>    0:05</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>4</td><td align=right>   29:18</td></tr>
<tr><td>Upper noisy</td><td align=right>4</td><td align=right>    0:47</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1140000.xws">0:00</a> Normal sinus rhythm<br>
<a href="samples/1140120.xws">1:20</a> PVC<br>
<a href="samples/1140339.xws">3:39</a> PVC<br>
<a href="samples/1140356.xws">3:56</a> Late-cycle PVC<br>
<a href="samples/1140435.xws">4:35</a> Late-cycle PVC<br>
<a href="samples/1140536.xws">5:36</a> Ventricular couplet<br>
<a href="samples/1140831.xws">8:31</a> PVCs<br>
<a href="samples/1140926.xws">9:26</a> PVC, muscle noise<br>
<a href="samples/1141137.xws">11:37</a> SVTA, PVC, junctional premature beat<br>
<a href="samples/1142002.xws">20:02</a> Noise<br>
<a href="samples/1142929.xws">29:29</a> Baseline artifact<br>

<hr>
<h2><a name="115">Record 115</a>  (MLII, V1; female, age 39)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>316</td><td>1637</td><td>1953</td></tr>
<tr align=right><td>Total</td><td>316</td><td>1637</td><td>1953</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>50-84</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:56</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:09</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1150055.xws">0:55</a> Normal sinus rhythm<br>
<a href="samples/1150322.xws">3:22</a> Sinus arrhythmia<br>
<a href="samples/1151552.xws">15:52</a> Baseline wander in lower signal<br>
<a href="samples/1152128.xws">21:28</a> Noise in lower signal<br>
<a href="samples/1152705.xws">27:05</a> Artifacts in lower signal<br>
<a href="samples/1152842.xws">28:42</a> Normal sinus rhythm<br>

<hr>
<h2><a name="116">Record 116</a>  (MLII, V1; male, age 68)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>384</td><td>1918</td><td>2302</td></tr>
<tr align=right><td>APC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>PVC</td><td>11</td><td>98</td><td>109</td></tr>
<tr align=right><td>Total</td><td>395</td><td>2017</td><td>2412</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 105 isolated beats
<li> 2 couplets
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>74-86</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>5</td><td align=right>   29:41</td></tr>
<tr><td>Upper noisy</td><td align=right>4</td><td align=right>    0:25</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There are two PVC forms.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1160044.xws">0:44</a> Normal sinus rhythm<br>
<a href="samples/1160131.xws">1:31</a> PVCs<br>
<a href="samples/1161000.xws">10:00</a> Ventricular couplet<br>
<a href="samples/1161232.xws">12:32</a> PVC<br>
<a href="samples/1161637.xws">16:37</a> Noise, saturation in upper signal<br>
<a href="samples/1162308.xws">23:08</a> Noise, saturation in upper signal<br>
<a href="samples/1162547.xws">25:47</a> Ventricular couplet<br>

<hr>
<h2><a name="117">Record 117  (MLII, V2; male, age 69)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>251</td><td>1283</td><td>1534</td></tr>
<tr align=right><td>APC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>251</td><td>1284</td><td>1535</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>48-66</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:55</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:01</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:09</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1170356.xws">3:56</a> Normal sinus rhythm<br>
<a href="samples/1171158.xws">11:58</a> Noise, APC<br>
<a href="samples/1172227.xws">22:27</a> Normal sinus rhythm<br>

<hr>
<h2><a name="118">Record 118</a>  (MLII, V1; male, age 69)</h2>
<p>
<i>Medications:</i> Digoxin, Norpace<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Right BBB</td><td>349</td><td>1817</td><td>2166</td></tr>
<tr align=right><td>APC</td><td>10</td><td>86</td><td>96</td></tr>
<tr align=right><td>PVC</td><td>3</td><td>13</td><td>16</td></tr>
<tr align=right><td>Blocked APC</td><td>3</td><td>7</td><td>10</td></tr>
<tr align=right><td>Total</td><td>365</td><td>1923</td><td>2288</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 94 isolated beats
<li> 1 couplet
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 16 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>54-91</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>7</td><td align=right>   29:32</td></tr>
<tr><td>Upper noisy</td><td align=right>2</td><td align=right>    0:07</td></tr>
<tr><td>Lower noisy</td><td align=right>2</td><td align=right>    0:10</td></tr>
<tr><td>Both noisy</td><td align=right>2</td><td align=right>    0:18</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1180339.xws">3:39</a> PVC<br>
<a href="samples/1180831.xws">8:31</a> Noise<br>
<a href="samples/1180923.xws">9:23</a> PVC<br>
<a href="samples/1181347.xws">13:47</a> Blocked APC<br>
<a href="samples/1182232.xws">22:32</a> APC, blocked APC, PVC<br>
<a href="samples/1182325.xws">23:25</a> APCs<br>
<a href="samples/1182541.xws">25:41</a> PVC, APC<br>
<a href="samples/1182623.xws">26:23</a> PVCs<br>
<a href="samples/1182648.xws">26:48</a> Noise<br>
<a href="samples/1182858.xws">28:58</a> Atrial couplet<br>
<a href="samples/1182953.xws">29:53</a> APCs<br>

<hr>
<h2><a name="119">Record 119</a>  (MLII, V1; female, age 51)</h2>
<p>
<i>Medications:</i> Pronestyl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>246</td><td>1297</td><td>1543</td></tr>
<tr align=right><td>PVC</td><td>80</td><td>364</td><td>444</td></tr>
<tr align=right><td>Total</td><td>326</td><td>1661</td><td>1987</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 444 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>61-84</td><td align=right>49</td><td align=right>   22:36</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>52-91</td><td align=right>37</td><td align=right>    3:55</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>56-77</td><td align=right>17</td><td align=right>    3:34</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>3</td><td align=right>   29:35</td></tr>
<tr><td>Lower noisy</td><td align=right>2</td><td align=right>    0:30</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1190155.xws">1:55</a> PVC<br>
<a href="samples/1190238.xws">2:38</a> Ventricular trigeminy<br>
<a href="samples/1190451.xws">4:51</a> Ventricular bigeminy<br>
<a href="samples/1190842.xws">8:42</a> Normal sinus rhythm<br>
<a href="samples/1192005.xws">20:05</a> Noise<br>
<a href="samples/1192533.xws">25:33</a> Noise<br>

<hr>
<h2><a name="121">Record 121</a>  (MLII, V1; female, age 83)</h2>
<p>
<i>Medications:</i> Digoxin, Isordil, Nitropaste<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>303</td><td>1558</td><td>1861</td></tr>
<tr align=right><td>APC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>303</td><td>1560</td><td>1863</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>55-83</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>6</td><td align=right>   29:09</td></tr>
<tr><td>Upper noisy</td><td align=right>3</td><td align=right>    0:16</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:39</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:01</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/1210106.xws">1:06</a> Normal sinus rhythm<br>
<a href="samples/1210333.xws">3:33</a> Noise in lower signal<br>
<a href="samples/1211648.xws">16:48</a> APC, PVC<br>
<a href="samples/1212432.xws">24:32</a> Noise<br>
<a href="samples/1212601.xws">26:01</a> Noise<br>

<hr>
<h2><a name="122">Record 122</a>  (MLII, V1; male, age 51)</h2>
<p>
<i>Medications:</i> Digoxin, Lasix, Pronestyl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>422</td><td>2054</td><td>2476</td></tr>
<tr align=right><td>Total</td><td>422</td><td>2054</td><td>2476</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>67-97</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The lower channel has low-amplitude high-frequency noise throughout.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1220109.xws">1:09</a> Noise in lower signal<br>
<a href="samples/1221347.xws">13:47</a> Normal sinus rhythm<br>
<a href="samples/1222825.xws">28:25</a> Normal sinus rhythm<br>

<hr>
<h2><a name="123">Record 123</a>  (MLII, V5; female, age 63)</h2>
<p>
<i>Medications:</i> Digoxin, Inderal<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>249</td><td>1266</td><td>1515</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>3</td><td>3</td></tr>
<tr align=right><td>Total</td><td>249</td><td>1269</td><td>1518</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>41-65</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform and interpolated.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1232210.xws">22:10</a> Sinus arrhythmia<br>
<a href="samples/1232511.xws">25:11</a> Interpolated PVC<br>
<a href="samples/1232741.xws">27:41</a> Interpolated PVC<br>
<a href="samples/1232836.xws">28:36</a> Sinus arrhythmia<br>

<hr>
<h2><a name="124">Record 124</a>  (MLII, V4; male, age 77)</h2>
<p>
<i>Medications:</i> Digoxin, Isordil, Quinidine<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Right BBB</td><td>238</td><td>1293</td><td>1531</td></tr>
<tr align=right><td>APC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Junctional premature</td><td>14</td><td>15</td><td>29</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>47</td><td>47</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>5</td><td>5</td></tr>
<tr align=right><td>Junctional escape</td><td>-</td><td>5</td><td>5</td></tr>
<tr align=right><td>Total</td><td>252</td><td>1367</td><td>1619</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 2 isolated beats
<li> 1 run of 3 beats
<li> 2 runs of 6 beats
<li> 1 run of 14 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 18 isolated beats
<li> 1 run of 6 beats
<li> 1 run of 8 beats
<li> 1 run of 20 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>47-64</td><td align=right>6</td><td align=right>   28:36</td></tr>
<tr><td>Nodal (junctional) rhythm</td><td align=center>56-64</td><td align=right>2</td><td align=right>    0:30</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>51-59</td><td align=right>2</td><td align=right>    0:22</td></tr>
<tr><td>Idioventricular rhythm</td><td align=center>53-61</td><td align=right>3</td><td align=right>    0:37</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:53</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:13</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  The junctional escape beats follow PVCs.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/1240443.xws">4:43</a> Accelerated junctional rhythm<br>
<a href="samples/1240509.xws">5:09</a> Accelerated idioventricular rhythm, 20 beats<br>
<a href="samples/1240521.xws">5:21</a> Accelerated idioventricular rhythm (continued from previous strip)<br>
<a href="samples/1240905.xws">9:05</a> Noise in lower signal<br>
<a href="samples/1241027.xws">10:27</a> Accelerated idioventricular rhythm<br>
<a href="samples/1241738.xws">17:38</a> Accelerated idioventricular rhythm<br>
<a href="samples/1242013.xws">20:13</a> APC<br>
<a href="samples/1242322.xws">23:22</a> Ventricular trigeminy<br>
<a href="samples/1242603.xws">26:03</a> PVC<br>
<a href="samples/1242741.xws">27:41</a> PVC, junctional escape beats<br>

<hr>
<h2><a name="200">Record 200</a>  (MLII, V1; male, age 64)</h2>
<p>
<i>Medications:</i> Digoxin, Quinidine<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>305</td><td>1438</td><td>1743</td></tr>
<tr align=right><td>APC</td><td>2</td><td>28</td><td>30</td></tr>
<tr align=right><td>PVC</td><td>126</td><td>700</td><td>826</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>433</td><td>2168</td><td>2601</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 28 isolated beats
<li> 1 couplet
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 721 isolated beats
<li> 42 couplets
<li> 5 runs of 3 beats
<li> 2 runs of 4 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>69-111</td><td align=right>70</td><td align=right>   15:58</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>60-108</td><td align=right>71</td><td align=right>   13:52</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>90-141</td><td align=right>7</td><td align=right>    0:15</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>14</td><td align=right>   21:44</td></tr>
<tr><td>Upper noisy</td><td align=right>6</td><td align=right>    0:44</td></tr>
<tr><td>Lower noisy</td><td align=right>16</td><td align=right>    6:36</td></tr>
<tr><td>Both noisy</td><td align=right>8</td><td align=right>    1:02</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  There are occasional bursts of high-frequency
noise in the upper channel, and severe noise and artifact in the lower
channel.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2000142.xws">1:42</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2000538.xws">5:38</a> Noise<br>
<a href="samples/2001814.xws">18:14</a> Ventricular tachycardia, 4 beats<br>
<a href="samples/2002052.xws">20:52</a> Noise<br>
<a href="samples/2002449.xws">24:49</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2002612.xws">26:12</a> Ventricular couplets<br>
<a href="samples/2002831.xws">28:31</a> Ventricular couplet<br>
<a href="samples/2002901.xws">29:01</a> APC, ventricular bigeminy<br>
<a href="samples/2002918.xws">29:18</a> APC, PVC<br>
<a href="samples/2002951.xws">29:51</a> PVCs<br>

<hr>
<h2><a name="201">Record 201</a>  (MLII, V1; male, age 68)</h2>
<p>
<i>Medications:</i> Digoxin, Hydrochlorthiazide, Inderal, KCl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>440</td><td>1185</td><td>1625</td></tr>
<tr align=right><td>APC</td><td>-</td><td>30</td><td>30</td></tr>
<tr align=right><td>Aberrated APC</td><td>2</td><td>95</td><td>97</td></tr>
<tr align=right><td>Junctional premature</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>198</td><td>198</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Junctional escape</td><td>-</td><td>10</td><td>10</td></tr>
<tr align=right><td>Blocked APC</td><td>-</td><td>37</td><td>37</td></tr>
<tr align=right><td>Total</td><td>442</td><td>1558</td><td>2000</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 79 isolated beats
<li> 23 couplets
<li> 1 run of 3 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 200 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>31-61</td><td align=right>16</td><td align=right>   12:57</td></tr>
<tr><td>SVTA</td><td align=center>124</td><td align=right>1</td><td align=right>    0:02</td></tr>
<tr><td>Atrial fibrillation</td><td align=center>56-149</td><td align=right>3</td><td align=right>   10:06</td></tr>
<tr><td>Nodal (junctional) rhythm</td><td align=center>37-60</td><td align=right>3</td><td align=right>    0:24</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>49-56</td><td align=right>12</td><td align=right>    6:37</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   30:00</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:02</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:01</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:02</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform and late-cycle.  Junctional escape beats occur following
episodes of ventricular trigeminy.
</dd></dl>
<h3>Points of interest:</h3>
<a href="samples/2010000.xws">0:00</a> Atrial fibrillation<br>
<a href="samples/2010615.xws">6:15</a> Transition from atrial fibrillation to nodal rhythm<br>
<a href="samples/2010752.xws">7:52</a> Onset of atrial fibrillation with aberrated beats<br>
<a href="samples/2010853.xws">8:53</a> Blocked APCs<br>
<a href="samples/2011814.xws">18:14</a> Noise<br>
<a href="samples/2012016.xws">20:16</a> PVCs, atrial couplet<br>
<a href="samples/2012233.xws">22:33</a> Ventricular trigeminy<br>
<a href="samples/2012350.xws">23:50</a> Normal sinus rhythm<br>
<a href="samples/2012415.xws">24:15</a> Aberrated atrial couplet, fusion PVC<br>
<a href="samples/2012519.xws">25:19</a> Aberrated atrial couplets with right and left bundle branch block<br>
<a href="samples/2012620.xws">26:20</a> Supraventricular tachyarrhythmia with aberration, 3 beats<br>
<a href="samples/2012803.xws">28:03</a> Atrial fibrillation with aberration<br>

<hr>
<h2><a name="202">Record 202</a>  (MLII, V1; male, age 68)</h2>
<p>
<i>Medications:</i> Digoxin, Hydrochlorthiazide, Inderal, KCl<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>261</td><td>1800</td><td>2061</td></tr>
<tr align=right><td>APC</td><td>-</td><td>36</td><td>36</td></tr>
<tr align=right><td>Aberrated APC</td><td>-</td><td>19</td><td>19</td></tr>
<tr align=right><td>PVC</td><td>4</td><td>15</td><td>19</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>265</td><td>1871</td><td>2136</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 26 isolated beats
<li> 13 couplets
<li> 1 run of 3 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 20 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>49-69</td><td align=right>3</td><td align=right>   19:31</td></tr>
<tr><td>Atrial flutter</td><td align=center>101-143</td><td align=right>1</td><td align=right>    0:48</td></tr>
<tr><td>Atrial fibrillation</td><td align=center>60-148</td><td align=right>4</td><td align=right>    9:46</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform and late-cycle.  This record was taken from the same
analog tape as record 201.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2021016.xws">10:16</a> Normal sinus rhythm, PVCs<br>
<a href="samples/2021224.xws">12:24</a> APCs, PVC<br>
<a href="samples/2021241.xws">12:41</a> Aberrated APCs, PVC<br>
<a href="samples/2021822.xws">18:22</a> Normal sinus rhythm, bradycardia<br>
<a href="samples/2021845.xws">18:45</a> Aberrated APCs<br>
<a href="samples/2021859.xws">18:59</a> Onset of atrial fibrillation with aberrated beats<br>
<a href="samples/2022110.xws">21:10</a> Atrial fibrillation, PVC<br>
<a href="samples/2022126.xws">21:26</a> End of atrial fibrillation<br>
<a href="samples/2022213.xws">22:13</a> Atrial fibrillation, aberrated beats<br>
<a href="samples/2022558.xws">25:58</a> Atrial flutter with 2:1 conduction<br>
<a href="samples/2022755.xws">27:55</a> Atrial fibrillation, aberrated beat<br>
<a href="samples/2022935.xws">29:35</a> Atrial fibrillation<br>

<hr>
<h2><a name="203">Record 203</a>  (MLII, V1; male, age 43)</h2>
<p>
<i>Medications:</i> Coumadin, Digoxin, Heparin, Hygroton, Lasix<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>426</td><td>2103</td><td>2529</td></tr>
<tr align=right><td>Aberrated APC</td><td>2</td><td>-</td><td>2</td></tr>
<tr align=right><td>PVC</td><td>71</td><td>373</td><td>444</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Unclassifiable</td><td>-</td><td>4</td><td>4</td></tr>
<tr align=right><td>Total</td><td>499</td><td>2481</td><td>2980</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 2 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 238 isolated beats
<li> 64 couplets
<li> 13 runs of 3 beats
<li> 6 runs of 4 beats
<li> 1 run of 7 beats
<li> 1 run of 9 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>63-173</td><td align=right>1</td><td align=right>    2:43</td></tr>
<tr><td>Atrial flutter</td><td align=center>61-180</td><td align=right>2</td><td align=right>    5:14</td></tr>
<tr><td>Atrial fibrillation</td><td align=center>54-180</td><td align=right>20</td><td align=right>   21:32</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>100-116</td><td align=right>1</td><td align=right>    0:04</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>124-189</td><td align=right>21</td><td align=right>    0:33</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>21</td><td align=right>   24:28</td></tr>
<tr><td>Upper noisy</td><td align=right>20</td><td align=right>    3:17</td></tr>
<tr><td>Lower noisy</td><td align=right>7</td><td align=right>    1:49</td></tr>
<tr><td>Both noisy</td><td align=right>8</td><td align=right>    0:30</td></tr>
<tr><td>Unreadable</td><td align=right>1</td><td align=right>    0:02</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  There are QRS morphology changes in the upper
channel due to axis shifts.  There is considerable noise in both channels,
including muscle artifact and baseline shifts.  This is a very difficult
record, even for humans!
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2030500.xws">5:00</a> Ventricular tachycardia, 4 beats and 9 beats<br>
<a href="samples/2031314.xws">13:14</a> Atrial fibrillation, ventricular couplets<br>
<a href="samples/2031502.xws">15:02</a> Noise<br>
<a href="samples/2032202.xws">22:02</a> Ventricular couplet, PVCs<br>
<a href="samples/2032325.xws">23:25</a> Noise<br>
<a href="samples/2032404.xws">24:04</a> PVCs<br>
<a href="samples/2032446.xws">24:46</a> Noise<br>
<a href="samples/2032639.xws">26:39</a> Ventricular tachycardia, 7 beats<br>
<a href="samples/2032651.xws">26:51</a> Ventricular couplet, PVCs<br>
<a href="samples/2032715.xws">27:15</a> Ventricular tachycardia, 3 beats<br>

<hr>
<h2><a name="205">Record 205</a>  (MLII, V1; male, age 59)</h2>
<p>
<i>Medications:</i> Digoxin, Quinaglute<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>448</td><td>2123</td><td>2571</td></tr>
<tr align=right><td>APC</td><td>1</td><td>2</td><td>3</td></tr>
<tr align=right><td>PVC</td><td>6</td><td>65</td><td>71</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>11</td><td>11</td></tr>
<tr align=right><td>Total</td><td>455</td><td>2201</td><td>2656</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 33 isolated beats
<li> 2 runs of 3 beats
<li> 1 run of 8 beats
<li> 1 run of 10 beats
<li> 1 run of 12 beats
<li> 1 run of 13 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>80-99</td><td align=right>7</td><td align=right>   29:43</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>79-216</td><td align=right>6</td><td align=right>    0:23</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:43</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:23</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are of two forms, one of which is much more common than the other.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2050457.xws">4:57</a> Ventricular tachycardia, 8 beats and 10 beats<br>
<a href="samples/2051454.xws">14:54</a> Noise in lower signal<br>
<a href="samples/2051522.xws">15:22</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2051603.xws">16:03</a> PVC<br>
<a href="samples/2051615.xws">16:15</a> Fusion PVCs<br>
<a href="samples/2051957.xws">19:57</a> PVC, APC<br>
<a href="samples/2052418.xws">24:18</a> Ventricular tachycardia, 12 beats, start of VR, 13 beats<br>
<a href="samples/2052430.xws">24:30</a> End of VR, 3-beat VT (continued from previous strip)<br>
<a href="samples/2052757.xws">27:57</a> PVCs<br>

<hr>
<h2><a name="207">Record 207</a>  (MLII, V1; female, age 89)</h2>
<p>
<i>Medications:</i> Digoxin, Quinaglute<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Left BBB</td><td>81</td><td>1376</td><td>1457</td></tr>
<tr align=right><td>Right BBB</td><td>86</td><td>-</td><td>86</td></tr>
<tr align=right><td>APC</td><td>-</td><td>107</td><td>107</td></tr>
<tr align=right><td>PVC</td><td>101</td><td>4</td><td>105</td></tr>
<tr align=right><td>Ventricular flutter wave</td><td>132</td><td>340</td><td>472</td></tr>
<tr align=right><td>Ventricular escape</td><td>-</td><td>105</td><td>105</td></tr>
<tr align=right><td>Total</td><td>400</td><td>1932</td><td>2332</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 1 isolated beat
<li> 1 couplet
<li> 1 run of 104 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 89 isolated beats
<li> 5 couplets
<li> 2 runs of 3 beats
<li> 1 run of 12 beats
<li> 1 run of 16 beats
<li> 1 run of 28 beats
<li> 1 run of 36 beats
<li> 1 run of 40 beats
<li> 1 run of 445 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>57-90</td><td align=right>10</td><td align=right>   22:20</td></tr>
<tr><td>SVTA</td><td align=center>108-130</td><td align=right>1</td><td align=right>    0:52</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>49-83</td><td align=right>4</td><td align=right>    2:38</td></tr>
<tr><td>Idioventricular rhythm</td><td align=center>29-71</td><td align=right>1</td><td align=right>    1:49</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>118-119</td><td align=right>2</td><td align=right>    0:03</td></tr>
<tr><td>Ventricular flutter</td><td align=center>143-358</td><td align=right>6</td><td align=right>    2:24</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>8</td><td align=right>   28:59</td></tr>
<tr><td>Upper noisy</td><td align=right>4</td><td align=right>    0:22</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:25</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:19</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>This is an extremely difficult record.  The predominant rhythm is normal
sinus with first degree AV block and left bundle branch block.  There are
periods when the conduction block changes to a right bundle branch block
pattern.  The PVCs are multiform.  Idioventricular rhythm appears following
the longest episode of ventricular flutter.  The record ends during the
episode of SVTA.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2070000.xws">0:00</a> Ventricular bigeminy with right bundle branch block<br>
<a href="samples/2070033.xws">0:33</a> Ventricular couplet, ventricular tachycardia, ventricular flutter<br>
<a href="samples/2070045.xws">0:45</a> Ventricular flutter (continued from previous strip)<br>
<a href="samples/2070057.xws">0:57</a> Ventricular flutter, VT (continued from previous strip)<br>
<a href="samples/2070128.xws">1:28</a> Normal sinus rhythm with first degree AV block<br>
<a href="samples/2070207.xws">2:07</a> Ventricular couplet, left and right bundle branch block<br>
<a href="samples/2070241.xws">2:41</a> Ventricular bigeminy with right bundle branch block<br>
<a href="samples/2070425.xws">4:25</a> Ventricular couplet, ventricular flutter<br>
<a href="samples/2070519.xws">5:19</a> Noise<br>
<a href="samples/2070656.xws">6:56</a> Noise<br>
<a href="samples/2071735.xws">17:35</a> Normal sinus rhythm with first degree AV block<br>
<a href="samples/2072536.xws">25:36</a> Ventricular bigeminy with LBBB, ventricular flutter<br>
<a href="samples/2072610.xws">26:10</a> Ventricular flutter<br>
<a href="samples/2072714.xws">27:14</a> End of ventricular flutter<br>
<a href="samples/2072910.xws">29:10</a> Atrial couplet, SVTA (104 beats, to end of record)<br>

<hr>
<h2><a name="208">Record 208</a>  (MLII, V1; female, age 23)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>278</td><td>1308</td><td>1586</td></tr>
<tr align=right><td>SVPC</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>PVC</td><td>168</td><td>824</td><td>992</td></tr>
<tr align=right><td>Fusion PVC</td><td>72</td><td>301</td><td>373</td></tr>
<tr align=right><td>Unclassifiable</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>518</td><td>2437</td><td>2955</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 2 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 422 isolated beats
<li> 461 couplets
<li> 7 runs of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>91-134</td><td align=right>27</td><td align=right>   24:43</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>79-129</td><td align=right>26</td><td align=right>    5:22</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>8</td><td align=right>   24:46</td></tr>
<tr><td>Lower noisy</td><td align=right>8</td><td align=right>    4:14</td></tr>
<tr><td>Both noisy</td><td align=right>8</td><td align=right>    1:02</td></tr>
<tr><td>Unreadable</td><td align=right>1</td><td align=right>    0:03</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform.  The couplets, many of which include a fusion PVC, are
often seen in a bigeminal pattern.   The triplets each consist of two
PVCs and a fusion PVC.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2081457.xws">14:57</a> Noise/artifact<br>
<a href="samples/2081702.xws">17:02</a> Ventricular couplets<br>
<a href="samples/2081910.xws">19:10</a> Ventricular trigeminy<br>
<a href="samples/2082106.xws">21:06</a> Noise<br>
<a href="samples/2082300.xws">23:00</a> Noise<br>
<a href="samples/2082808.xws">28:08</a> Ventricular triplet<br>
<a href="samples/2082858.xws">28:58</a> Ventricular couplets, isolated PVCs<br>
<a href="samples/2082937.xws">29:37</a> Ventricular triplet<br>

<hr>
<h2><a name="209">Record 209</a>  (MLII, V1; male, age 62)</h2>
<p>
<i>Medications:</i> Aldomet, Hydrodiuril, Inderal<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>475</td><td>2146</td><td>2621</td></tr>
<tr align=right><td>APC</td><td>11</td><td>372</td><td>383</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>486</td><td>2519</td><td>3005</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 119 isolated beats
<li> 2 couplets
<li> 1 run of 4 beats
<li> 1 run of 6 beats
<li> 1 run of 7 beats
<li> 1 run of 13 beats
<li> 1 run of 14 beats
<li> 1 run of 19 beats
<li> 1 run of 25 beats
<li> 1 run of 40 beats
<li> 1 run of 58 beats
<li> 1 run of 74 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>82-116</td><td align=right>11</td><td align=right>   28:23</td></tr>
<tr><td>SVTA</td><td align=center>106-171</td><td align=right>10</td><td align=right>    1:42</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>10</td><td align=right>   23:21</td></tr>
<tr><td>Lower noisy</td><td align=right>10</td><td align=right>    6:44</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/2090047.xws">0:47</a> APC<br>
<a href="samples/2090550.xws">5:50</a> Noise<br>
<a href="samples/2091257.xws">12:57</a> PVC<br>
<a href="samples/2091421.xws">14:21</a> SVTA, 14 beats<br>
<a href="samples/2092325.xws">23:25</a> APCs<br>
<a href="samples/2092817.xws">28:17</a> Noise, APC<br>
<a href="samples/2092833.xws">28:33</a> SVTA, 4 beats, 13 beats<br>
<a href="samples/2092910.xws">29:10</a> SVTA, 6 beats<br>

<hr>
<h2><a name="210">Record 210</a>  (MLII, V1; male, age 89)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>413</td><td>2010</td><td>2423</td></tr>
<tr align=right><td>Aberrated APC</td><td>2</td><td>20</td><td>22</td></tr>
<tr align=right><td>PVC</td><td>30</td><td>164</td><td>194</td></tr>
<tr align=right><td>Fusion PVC</td><td>1</td><td>9</td><td>10</td></tr>
<tr align=right><td>Ventricular escape</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>446</td><td>2204</td><td>2650</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 20 isolated beats
<li> 1 couplet
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 163 isolated beats
<li> 13 couplets
<li> 1 run of 4 beats
<li> 2 runs of 6 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Atrial fibrillation</td><td align=center>63-158</td><td align=right>9</td><td align=right>   29:30</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>69-109</td><td align=right>5</td><td align=right>    0:23</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>85-114</td><td align=right>1</td><td align=right>    0:07</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>103-161</td><td align=right>2</td><td align=right>    0:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>6</td><td align=right>   29:16</td></tr>
<tr><td>Upper noisy</td><td align=right>3</td><td align=right>    0:05</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:14</td></tr>
<tr><td>Both noisy</td><td align=right>5</td><td align=right>    0:30</td></tr>
<tr><td>Unreadable</td><td align=right>1</td><td align=right>    0:01</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2100347.xws">3:47</a> Noise<br>
<a href="samples/2100656.xws">6:56</a> Ventricular tachycardia, 6 beats<br>
<a href="samples/2101314.xws">13:14</a> Ventricular couplets<br>
<a href="samples/2101555.xws">15:55</a> Noise<br>
<a href="samples/2101732.xws">17:32</a> Aberrated beat<br>
<a href="samples/2101757.xws">17:57</a> Ventricular tachycardia, 6 beats<br>
<a href="samples/2102033.xws">20:33</a> PVCs<br>
<a href="samples/2102915.xws">29:15</a> PVCs, aberrated beat, ventricular escape beat, fusion PVC<br>

<hr>
<h2><a name="212">Record 212</a>  (MLII, V1; female, age 32)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>129</td><td>794</td><td>923</td></tr>
<tr align=right><td>Right BBB</td><td>334</td><td>1491</td><td>1825</td></tr>
<tr align=right><td>Total</td><td>463</td><td>2285</td><td>2748</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>63-108</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>7</td><td align=right>   29:41</td></tr>
<tr><td>Lower noisy</td><td align=right>3</td><td align=right>    0:10</td></tr>
<tr><td>Both noisy</td><td align=right>4</td><td align=right>    0:15</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is rate-related right bundle branch block which appears when the heart
rate exceeds approximately 90 bpm.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2120005.xws">0:05</a> Normal sinus rhythm with right bundle branch block<br>
<a href="samples/2121842.xws">18:42</a> Noise<br>
<a href="samples/2122421.xws">24:21</a> End of RBBB in normal sinus rhythm as heart rate decreases<br>
<a href="samples/2122438.xws">24:38</a> Sinus arrhythmia<br>
<a href="samples/2122645.xws">26:45</a> Noise<br>
<a href="samples/2122846.xws">28:46</a> Start of RBBB in normal sinus rhythm as heart rate increases<br>

<hr>
<h2><a name="213">Record 213</a>  (MLII, V1; male, age 61)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>432</td><td>2209</td><td>2641</td></tr>
<tr align=right><td>APC</td><td>1</td><td>24</td><td>25</td></tr>
<tr align=right><td>Aberrated APC</td><td>-</td><td>3</td><td>3</td></tr>
<tr align=right><td>PVC</td><td>25</td><td>195</td><td>220</td></tr>
<tr align=right><td>Fusion PVC</td><td>93</td><td>269</td><td>362</td></tr>
<tr align=right><td>Total</td><td>551</td><td>2700</td><td>3251</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 26 isolated beats
<li> 1 couplet
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 560 isolated beats
<li> 4 couplets
<li> 3 runs of 3 beats
<li> 1 run of 5 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>101-113</td><td align=right>22</td><td align=right>   29:01</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>102-116</td><td align=right>19</td><td align=right>    1:00</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>110-117</td><td align=right>2</td><td align=right>    0:04</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform and usually late-cycle, frequently resulting in
fusion PVCs.  The morphology of the fusion PVCs varies from almost normal
to almost identical to that of the PVCs.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2130339.xws">3:39</a> Fusion PVC couplet<br>
<a href="samples/2131448.xws">14:48</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2131505.xws">15:05</a> Fusion PVC/PVC couplet<br>
<a href="samples/2131538.xws">15:38</a> APC<br>
<a href="samples/2131730.xws">17:30</a> Ventricular tachycardia, 4 beats<br>
<a href="samples/2131755.xws">17:55</a> PVCs, fusion PVCs, APC<br>
<a href="samples/2132443.xws">24:43</a> Fusion PVC, PVCs, aberrated APC<br>
<a href="samples/2132558.xws">25:58</a> Aberrated atrial couplet<br>
<a href="samples/2132651.xws">26:51</a> Ventricular bigeminy<br>
<a href="samples/2132856.xws">28:56</a> Fusion PVCs, PVC<br>

<hr>
<h2><a name="214">Record 214</a>  (MLII, V1; male, age 53)</h2>
<p>
<i>Medications:</i> Digoxin, Dilantin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Left BBB</td><td>339</td><td>1664</td><td>2003</td></tr>
<tr align=right><td>PVC</td><td>44</td><td>212</td><td>256</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Unclassifiable</td><td>-</td><td>2</td><td>2</td></tr>
<tr align=right><td>Total</td><td>383</td><td>1879</td><td>2262</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 233 isolated beats
<li> 9 couplets
<li> 2 runs of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>49-92</td><td align=right>13</td><td align=right>   28:53</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>71-87</td><td align=right>10</td><td align=right>    1:08</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>126-150</td><td align=right>2</td><td align=right>    0:05</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   29:59</td></tr>
<tr><td>Upper noisy</td><td align=right>2</td><td align=right>    0:02</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:04</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  There are two episodes of artifactual amplitude
decrease and one occurrence of tape slippage.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2140030.xws">0:30</a> Normal sinus rhythm with left bundle branch block, PVC<br>
<a href="samples/2140221.xws">2:21</a> Multiform PVCs<br>
<a href="samples/2140235.xws">2:35</a> Ventricular couplet<br>
<a href="samples/2140325.xws">3:25</a> Artifactual amplitude changes<br>
<a href="samples/2140356.xws">3:56</a> Ventricular couplet<br>
<a href="samples/2140508.xws">5:08</a> Tape slippage<br>
<a href="samples/2140538.xws">5:38</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2141353.xws">13:53</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2142317.xws">23:17</a> Ventricular couplet<br>
<a href="samples/2142752.xws">27:52</a> PVC/fusion PVC couplet<br>

<hr>
<h2><a name="215">Record 215</a>  (MLII, V1; male, age 81)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>534</td><td>2661</td><td>3195</td></tr>
<tr align=right><td>APC</td><td>1</td><td>2</td><td>3</td></tr>
<tr align=right><td>PVC</td><td>33</td><td>131</td><td>164</td></tr>
<tr align=right><td>Fusion PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>568</td><td>2795</td><td>3363</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 120 isolated beats
<li> 18 couplets
<li> 3 runs of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>81-124</td><td align=right>3</td><td align=right>   30:03</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>174-177</td><td align=right>2</td><td align=right>    0:02</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>14</td><td align=right>   29:18</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:00</td></tr>
<tr><td>Lower noisy</td><td align=right>14</td><td align=right>    0:39</td></tr>
<tr><td>Both noisy</td><td align=right>2</td><td align=right>    0:09</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  There are two very short occurrences of tape slippage
(each less than one second in duration).
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2150255.xws">2:55</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2150311.xws">3:11</a> Noise, ventricular couplet<br>
<a href="samples/2150946.xws">9:46</a> PVC, APC<br>
<a href="samples/2151558.xws">15:58</a> PVC<br>
<a href="samples/2152025.xws">20:25</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2152216.xws">22:16</a> Tape slippage<br>
<a href="samples/2152457.xws">24:57</a> Ventricular couplet<br>
<a href="samples/2152730.xws">27:30</a> Ventricular triplet<br>
<a href="samples/2152757.xws">27:57</a> Noise in lower signal<br>
<a href="samples/2152942.xws">29:42</a> Tape slippage, ventricular couplet<br>

<hr>
<h2><a name="217">Record 217</a>  (MLII, V1; male, age 65)</h2>
<p>
<i>Medications:</i> Digoxin, Lasix, Quinidine<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>9</td><td>235</td><td>244</td></tr>
<tr align=right><td>PVC</td><td>22</td><td>140</td><td>162</td></tr>
<tr align=right><td>Paced</td><td>301</td><td>1241</td><td>1542</td></tr>
<tr align=right><td>Pacemaker fusion</td><td>31</td><td>229</td><td>260</td></tr>
<tr align=right><td>Total</td><td>363</td><td>1845</td><td>2208</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 143 isolated beats
<li> 8 couplets
<li> 1 run of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Atrial fibrillation</td><td align=center>69-103</td><td align=right>24</td><td align=right>    4:12</td></tr>
<tr><td>Paced rhythm</td><td align=center>65-76</td><td align=right>33</td><td align=right>   25:10</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>68-91</td><td align=right>9</td><td align=right>    0:42</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>103</td><td align=right>1</td><td align=right>    0:02</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>3</td><td align=right>   30:00</td></tr>
<tr><td>Upper noisy</td><td align=right>2</td><td align=right>    0:05</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2170000.xws">0:00</a> Paced rhythm, pacemaker fusion beat<br>
<a href="samples/2170033.xws">0:33</a> PVC<br>
<a href="samples/2170123.xws">1:23</a> PVCs, pacemaker fusion beats<br>
<a href="samples/2170418.xws">4:18</a> Paced beats, pacemaker fusion beats, normal beats, PVCs<br>
<a href="samples/2170612.xws">6:12</a> Ventricular couplet<br>
<a href="samples/2170651.xws">6:51</a> Ventricular couplet<br>
<a href="samples/2170705.xws">7:05</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2171227.xws">12:27</a> Ventricular bigeminy with paced beats<br>
<a href="samples/2171401.xws">14:01</a> Noise<br>
<a href="samples/2171530.xws">15:30</a> Atrial fibrillation<br>
<a href="samples/2171656.xws">16:56</a> Ventricular couplet<br>
<a href="samples/2172227.xws">22:27</a> Atrial fibrillation<br>

<hr>
<h2><a name="219">Record 219</a>  (MLII, V1; male, age not recorded)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>367</td><td>1715</td><td>2082</td></tr>
<tr align=right><td>APC</td><td>-</td><td>7</td><td>7</td></tr>
<tr align=right><td>PVC</td><td>13</td><td>51</td><td>64</td></tr>
<tr align=right><td>Fusion PVC</td><td>1</td><td>-</td><td>1</td></tr>
<tr align=right><td>Blocked APC</td><td>-</td><td>133</td><td>133</td></tr>
<tr align=right><td>Total</td><td>381</td><td>1906</td><td>2287</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 7 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 65 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>38-75</td><td align=right>8</td><td align=right>    6:01</td></tr>
<tr><td>Atrial fibrillation</td><td align=center>51-103</td><td align=right>10</td><td align=right>   23:47</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>71-88</td><td align=right>2</td><td align=right>    0:08</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>74-94</td><td align=right>1</td><td align=right>    0:10</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>Following some conversions from atrial fibrillation to normal sinus
rhythm are pauses up to 3 seconds in duration.  The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2190249.xws">2:49</a> Fusion PVC<br>
<a href="samples/2190508.xws">5:08</a> APC<br>
<a href="samples/2190522.xws">5:22</a> Onset of atrial fibrillation<br>
<a href="samples/2191350.xws">13:50</a> End of atrial fibrillation, conversion pause, APC, blocked APC<br>
<a href="samples/2191900.xws">19:00</a> End of atrial fibrillation<br>
<a href="samples/2191957.xws">19:57</a> Normal sinus rhythm, blocked APCs<br>
<a href="samples/2192211.xws">22:11</a> End of atrial fibrillation, conversion pause, blocked APCs<br>
<a href="samples/2192243.xws">22:43</a> Blocked APCs<br>
<a href="samples/2192443.xws">24:43</a> PVC<br>
<a href="samples/2192609.xws">26:09</a> Atrial fibrillation<br>
<a href="samples/2192855.xws">28:55</a> Atrial fibrillation, PVCs<br>

<hr>
<h2><a name="220">Record 220</a>  (MLII, V1; female, age 87)</h2>
<p>
<i>Medications:</i> Digoxin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>353</td><td>1601</td><td>1954</td></tr>
<tr align=right><td>APC</td><td>1</td><td>93</td><td>94</td></tr>
<tr align=right><td>Total</td><td>354</td><td>1694</td><td>2048</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 38 isolated beats
<li> 13 couplets
<li> 6 runs of 3 beats
<li> 3 runs of 4 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>58-74</td><td align=right>9</td><td align=right>   29:50</td></tr>
<tr><td>SVTA</td><td align=center>113-150</td><td align=right>8</td><td align=right>    0:16</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>3</td><td align=right>   29:58</td></tr>
<tr><td>Lower noisy</td><td align=right>2</td><td align=right>    0:08</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/2200646.xws">6:46</a> SVTA (3 runs)<br>
<a href="samples/2201041.xws">10:41</a> SVTA (2 runs)<br>
<a href="samples/2201810.xws">18:10</a> Atrial couplets<br>
<a href="samples/2202029.xws">20:29</a> SVTA, atrial couplets<br>
<a href="samples/2202358.xws">23:58</a> Noise in lower signal<br>
<a href="samples/2202544.xws">25:44</a> Atrial couplet<br>
<a href="samples/2202940.xws">29:40</a> APC<br>

<hr>
<h2><a name="221">Record 221</a>  (MLII, V1; male, age 83)</h2>
<p>
<i>Medications:</i> Hydrochlorthiazide, Lasix<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>327</td><td>1704</td><td>2031</td></tr>
<tr align=right><td>PVC</td><td>80</td><td>316</td><td>396</td></tr>
<tr align=right><td>Total</td><td>407</td><td>2020</td><td>2427</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 384 isolated beats
<li> 3 couplets
<li> 2 runs of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Atrial fibrillation</td><td align=center>47-110</td><td align=right>12</td><td align=right>   29:17</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>88-101</td><td align=right>1</td><td align=right>    0:03</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>69-92</td><td align=right>8</td><td align=right>    0:42</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>122-130</td><td align=right>2</td><td align=right>    0:04</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>7</td><td align=right>   29:48</td></tr>
<tr><td>Upper noisy</td><td align=right>1</td><td align=right>    0:04</td></tr>
<tr><td>Lower noisy</td><td align=right>5</td><td align=right>    0:14</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform, but one form is much more common than the others.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2210000.xws">0:00</a> Atrial fibrillation, PVCs<br>
<a href="samples/2210243.xws">2:43</a> Ventricular couplet<br>
<a href="samples/2211300.xws">13:00</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2211356.xws">13:56</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2211749.xws">17:49</a> Ventricular couplet<br>
<a href="samples/2211912.xws">19:12</a> PVCs<br>
<a href="samples/2211942.xws">19:42</a> Noise<br>
<a href="samples/2212044.xws">20:44</a> Ventricular couplet<br>

<hr>
<h2><a name="222">Record 222</a>  (MLII, V1; female, age 84)</h2>
<p>
<i>Medications:</i> Digoxin, Quinidine<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>367</td><td>1695</td><td>2062</td></tr>
<tr align=right><td>APC</td><td>-</td><td>208</td><td>208</td></tr>
<tr align=right><td>Junctional premature</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Junctional escape</td><td>-</td><td>212</td><td>212</td></tr>
<tr align=right><td>Total</td><td>367</td><td>2116</td><td>2483</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 147 isolated beats
<li> 21 couplets
<li> 4 runs of 3 beats
<li> 2 runs of 4 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>49-84</td><td align=right>32</td><td align=right>   15:57</td></tr>
<tr><td>Atrial bigeminy</td><td align=center>57-98</td><td align=right>3</td><td align=right>    1:28</td></tr>
<tr><td>SVTA</td><td align=center>121-148</td><td align=right>4</td><td align=right>    0:08</td></tr>
<tr><td>Atrial flutter</td><td align=center>123-148</td><td align=right>42</td><td align=right>    7:03</td></tr>
<tr><td>Atrial fibrillation</td><td align=center>69-163</td><td align=right>24</td><td align=right>    1:44</td></tr>
<tr><td>Nodal (junctional) rhythm</td><td align=center>47-122</td><td align=right>31</td><td align=right>    3:45</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>8</td><td align=right>   29:10</td></tr>
<tr><td>Upper noisy</td><td align=right>3</td><td align=right>    0:08</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:05</td></tr>
<tr><td>Both noisy</td><td align=right>4</td><td align=right>    0:42</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The episodes of paroxysmal atrial flutter/fibrillation are usually
followed by nodal escape beats.  There are several intervals of
high-frequency noise/artifact in both channels.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2220645.xws">6:45</a> Normal sinus rhythm<br>
<a href="samples/2221732.xws">17:32</a> Atrial fibrillation<br>
<a href="samples/2221948.xws">19:48</a> Atrial couplet<br>
<a href="samples/2222007.xws">20:07</a> Atrial bigeminy<br>
<a href="samples/2222232.xws">22:32</a> Paroxysmal atrial flutter, nodal rhythm<br>
<a href="samples/2222443.xws">24:43</a> Noise<br>
<a href="samples/2222543.xws">25:43</a> End of atrial flutter, nodal rhythm, normal sinus rhythm<br>
<a href="samples/2222609.xws">26:09</a> Paroxysmal atrial flutter, nodal rhythm<br>

<hr>
<h2><a name="223">Record 223</a>  (MLII, V1; male, age 73)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>373</td><td>1656</td><td>2029</td></tr>
<tr align=right><td>APC</td><td>7</td><td>65</td><td>72</td></tr>
<tr align=right><td>Aberrated APC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>PVC</td><td>18</td><td>455</td><td>473</td></tr>
<tr align=right><td>Fusion PVC</td><td>6</td><td>8</td><td>14</td></tr>
<tr align=right><td>Atrial escape</td><td>2</td><td>14</td><td>16</td></tr>
<tr align=right><td>Total</td><td>406</td><td>2199</td><td>2605</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 57 isolated beats
<li> 8 couplets
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 252 isolated beats
<li> 27 couplets
<li> 4 runs of 3 beats
<li> 1 run of 5 beats
<li> 1 run of 67 beats
<li> 1 run of 97 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>75-94</td><td align=right>11</td><td align=right>   23:23</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>74-106</td><td align=right>7</td><td align=right>    4:19</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>67-92</td><td align=right>3</td><td align=right>    0:38</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>76-118</td><td align=right>7</td><td align=right>    1:46</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>5</td><td align=right>   28:41</td></tr>
<tr><td>Lower noisy</td><td align=right>5</td><td align=right>    1:20</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:05</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.  The two longest episodes of ventricular tachycardia
are slow (100 to 105 bpm) and bidirectional.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2230935.xws">9:35</a> Bidirectional ventricular tachycardia<br>
<a href="samples/2231235.xws">12:35</a> Noise in lower signal<br>
<a href="samples/2231339.xws">13:39</a> Atrial couplet<br>
<a href="samples/2231351.xws">13:51</a> Ventricular bigeminy<br>
<a href="samples/2231721.xws">17:21</a> Bidirectional ventricular tachycardia<br>
<a href="samples/2231755.xws">17:55</a> End of ventricular tachycardia<br>
<a href="samples/2231907.xws">19:07</a> APC, ventricular couplet, atrial escape beat, aberrated APC<br>
<a href="samples/2232358.xws">23:58</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2232547.xws">25:47</a> Ventricular tachycardia, 5 beats<br>
<a href="samples/2232916.xws">29:16</a> APCs, atrial escape beat, ventricular couplets<br>
<a href="samples/2232951.xws">29:51</a> Multiform ventricular couplets<br>

<hr>
<h2><a name="228">Record 228</a>  (MLII, V1; female, age 80)</h2>
<p>
<i>Medications:</i> Digoxin, Norpace<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>290</td><td>1398</td><td>1688</td></tr>
<tr align=right><td>APC</td><td>-</td><td>3</td><td>3</td></tr>
<tr align=right><td>PVC</td><td>60</td><td>302</td><td>362</td></tr>
<tr align=right><td>Total</td><td>350</td><td>1703</td><td>2053</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 360 isolated beats
<li> 1 couplet
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>54-80</td><td align=right>21</td><td align=right>   24:17</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>50-88</td><td align=right>20</td><td align=right>    5:48</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>11</td><td align=right>   28:25</td></tr>
<tr><td>Upper noisy</td><td align=right>10</td><td align=right>    1:40</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>There is first degree AV block.  The PVCs are multiform.  There are
three short occurrences of tape slippage with a maximum duration of 2.2
seconds.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2280019.xws">0:19</a> Ventricular bigeminy<br>
<a href="samples/2280038.xws">0:38</a> Artifacts<br>
<a href="samples/2280050.xws">0:50</a> PVC, ventricular couplet<br>
<a href="samples/2280435.xws">4:35</a> Noise, PVCs<br>
<a href="samples/2281918.xws">19:18</a> PVC, APC<br>
<a href="samples/2282008.xws">20:08</a> Baseline noise<br>
<a href="samples/2282137.xws">21:37</a> Tape slippage<br>
<a href="samples/2282149.xws">21:49</a> Tape slippage<br>
<a href="samples/2282642.xws">26:42</a> Ventricular bigeminy<br>

<hr>
<h2><a name="230">Record 230</a>  (MLII, V1; male, age 32)</h2>
<p>
<i>Medications:</i> Dilantin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>397</td><td>1858</td><td>2255</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>397</td><td>1859</td><td>2256</td></tr>
</table>

<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>63-99</td><td align=right>104</td><td align=right>   17:45</td></tr>
<tr><td>Pre-excitation (WPW)</td><td align=center>59-93</td><td align=right>103</td><td align=right>   12:21</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>2</td><td align=right>   30:03</td></tr>
<tr><td>Lower noisy</td><td align=right>1</td><td align=right>    0:03</td></tr>
</table>

<h3>Points of interest:</h3>
<a href="samples/2300000.xws">0:00</a> Onset of pre-excitation<br>
<a href="samples/2300012.xws">0:12</a> End of pre-excitation (continued from previous strip)<br>
<a href="samples/2300511.xws">5:11</a> WPW<br>
<a href="samples/2300926.xws">9:26</a> Normal sinus rhythm<br>
<a href="samples/2302904.xws">29:04</a> PVC<br>

<hr>
<h2><a name="231">Record 231</a>  (MLII, V1; female, age 72)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>12</td><td>302</td><td>314</td></tr>
<tr align=right><td>Right BBB</td><td>278</td><td>976</td><td>1254</td></tr>
<tr align=right><td>APC</td><td>1</td><td>-</td><td>1</td></tr>
<tr align=right><td>PVC</td><td>2</td><td>-</td><td>2</td></tr>
<tr align=right><td>Blocked APC</td><td>2</td><td>-</td><td>2</td></tr>
<tr align=right><td>Total</td><td>295</td><td>1278</td><td>1573</td></tr>
</table>

<p><i>Ventricular ectopy</i><br>
<ul><li> 1 couplet
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>49-69</td><td align=right>6</td><td align=right>   18:26</td></tr>
<tr><td>2&deg; heart block</td><td align=center>34-38</td><td align=right>5</td><td align=right>   11:40</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>AV conduction is quite abnormal with periods of 2:1 AV block, examples
of Mobitz II block, and right bundle branch block which appears to be
rate-related.  The couplet is probably ventricular.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2310002.xws">0:02</a> Normal sinus rhythm, Mobitz II block, right bundle branch block<br>
<a href="samples/2310224.xws">2:24</a> Blocked APCs, APC, ventricular couplet<br>
<a href="samples/2312011.xws">20:11</a> 2:1 heart block with right bundle branch block<br>
<a href="samples/2312110.xws">21:10</a> Onset of 2:1 heart block<br>
<a href="samples/2312322.xws">23:22</a> Transition from 2:1 block with normal conduction to NSR with RBBB<br>

<hr>
<h2><a name="232">Record 232</a>  (MLII, V1; female, age 76)</h2>
<p>
<i>Medications:</i> Aldomet, Inderal<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Right BBB</td><td>80</td><td>317</td><td>397</td></tr>
<tr align=right><td>APC</td><td>215</td><td>1167</td><td>1382</td></tr>
<tr align=right><td>Junctional escape</td><td>-</td><td>1</td><td>1</td></tr>
<tr align=right><td>Total</td><td>295</td><td>1485</td><td>1780</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 18 isolated beats
<li> 82 couplets
<li> 27 runs of 3 beats
<li> 32 runs of 4 beats
<li> 17 runs of 5 beats
<li> 25 runs of 6 beats
<li> 13 runs of 7 beats
<li> 13 runs of 8 beats
<li> 9 runs of 9 beats
<li> 15 runs of 10 beats
<li> 11 runs of 11 beats
<li> 4 runs of 12 beats
<li> 4 runs of 13 beats
<li> 2 runs of 14 beats
<li> 3 runs of 15 beats
<li> 1 run of 36 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Sinus bradycardia</td><td align=center>24-28</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>14</td><td align=right>   26:38</td></tr>
<tr><td>Upper noisy</td><td align=right>6</td><td align=right>    1:24</td></tr>
<tr><td>Lower noisy</td><td align=right>10</td><td align=right>    1:14</td></tr>
<tr><td>Both noisy</td><td align=right>6</td><td align=right>    0:49</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The rhythm is compatible with sick sinus syndrome.  There is underlying
sinus bradycardia, first degree AV block, and frequent ectopic atrial runs
at rates of 80 to 90 bpm.  There are numerous long pauses up to 6 seconds
in duration.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2320058.xws">0:58</a> Noise<br>
<a href="samples/2320151.xws">1:51</a> Atrial couplets<br>
<a href="samples/2321151.xws">11:51</a> Noise<br>
<a href="samples/2321306.xws">13:06</a> Atrial couplets<br>
<a href="samples/2321509.xws">15:09</a> Short runs of SVTA<br>
<a href="samples/2321817.xws">18:17</a> SVTA, pause<br>
<a href="samples/2322231.xws">22:31</a> Pauses<br>
<a href="samples/2322247.xws">22:47</a> Pauses<br>
<a href="samples/2322320.xws">23:20</a> Pauses<br>
<a href="samples/2322334.xws">23:34</a> Pause<br>
<a href="samples/2322353.xws">23:53</a> Sinus bradycardia<br>

<hr>
<h2><a name="233">Record 233</a>  (MLII, V1; male, age 57)</h2>
<p>
<i>Medications:</i> Dilantin<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>371</td><td>1859</td><td>2230</td></tr>
<tr align=right><td>APC</td><td>3</td><td>4</td><td>7</td></tr>
<tr align=right><td>PVC</td><td>139</td><td>692</td><td>831</td></tr>
<tr align=right><td>Fusion PVC</td><td>5</td><td>6</td><td>11</td></tr>
<tr align=right><td>Total</td><td>518</td><td>2561</td><td>3079</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 7 isolated beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 704 isolated beats
<li> 60 couplets
<li> 6 runs of 3 beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>98-110</td><td align=right>36</td><td align=right>   28:03</td></tr>
<tr><td>Ventricular bigeminy</td><td align=center>88-122</td><td align=right>28</td><td align=right>    1:48</td></tr>
<tr><td>Ventricular trigeminy</td><td align=center>106-122</td><td align=right>1</td><td align=right>    0:04</td></tr>
<tr><td>Ventricular tachycardia</td><td align=center>120-141</td><td align=right>6</td><td align=right>    0:11</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>1</td><td align=right>   30:06</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are multiform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2330011.xws">0:11</a> APCs, PVCs<br>
<a href="samples/2330025.xws">0:25</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2330218.xws">2:18</a> Ventricular bigeminy<br>
<a href="samples/2330243.xws">2:43</a> Fusion PVC/PVC couplet<br>
<a href="samples/2330339.xws">3:39</a> Ventricular couplets<br>
<a href="samples/2330502.xws">5:02</a> Transient amplitude decrease on upper signal<br>
<a href="samples/2330943.xws">9:43</a> Ventricular tachycardia, 3 beats<br>
<a href="samples/2331620.xws">16:20</a> PVCs, ventricular couplet<br>
<a href="samples/2331802.xws">18:02</a> PVCs, APC<br>
<a href="samples/2332223.xws">22:23</a> Ventricular tachycardia, 2 runs of 3 beats, ventricular couplets<br>

<hr>
<h2><a name="234">Record 234</a>  (MLII, V1; female, age 56)</h2>
<p>
<i>Medications:</i> None<br>
<p><table>
<tr><th>Beats</th><th>Before 5:00</th><th>After 5:00</th><th>Total</th></tr>
<tr align=right><td>Normal</td><td>462</td><td>2238</td><td>2700</td></tr>
<tr align=right><td>Junctional premature</td><td>-</td><td>50</td><td>50</td></tr>
<tr align=right><td>PVC</td><td>-</td><td>3</td><td>3</td></tr>
<tr align=right><td>Total</td><td>462</td><td>2291</td><td>2753</td></tr>
</table>

<p><i>Supraventricular ectopy</i><br>
<ul><li> 1 run of 50 beats
</ul>
<p><i>Ventricular ectopy</i><br>
<ul><li> 3 isolated beats
</ul>
<p><table>
<tr><th>Rhythm</th><th>Rate</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Normal sinus rhythm</td><td align=center>84-99</td><td align=right>2</td><td align=right>   29:40</td></tr>
<tr><td>SVTA</td><td align=center>91-147</td><td align=right>1</td><td align=right>    0:26</td></tr>
</table>

<p><table>
<tr><th>Signal quality</th><th>Episodes</th><th>Duration</th></tr>
<tr><td>Both clean</td><td align=right>4</td><td align=right>   28:40</td></tr>
<tr><td>Lower noisy</td><td align=right>4</td><td align=right>    1:18</td></tr>
<tr><td>Both noisy</td><td align=right>1</td><td align=right>    0:07</td></tr>
</table>

<p><dl><dt>Notes:</dt>
<dd>The PVCs are uniform.
</dd></dl>

<h3>Points of interest:</h3>
<a href="samples/2340016.xws">0:16</a> Normal sinus rhythm<br>
<a href="samples/2340637.xws">6:37</a> Noise<br>
<a href="samples/2341401.xws">14:01</a> Onset of junctional tachycardia<br>
<a href="samples/2341426.xws">14:26</a> End of junctional tachycardia<br>
<a href="samples/2341702.xws">17:02</a> PVC<br>
<a href="samples/2342126.xws">21:26</a> PVC<br>
<a href="samples/2342317.xws">23:17</a> Noise<br>

<HR>
<P><ADDRESS>
<I><A HREF="mailto:george@mit.edu">George B. Moody (<tt>george@mit.edu</tt>)</A></ADDRESS></I><BR>
24 May 1997 (revised 24 June 2010)
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